DC/DC电源变换器电磁兼容性建模与仿真预测

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中图分类号：U463.6；TM401 文献标志码：A DOI：10.20104/j.cnki.1674-6546.20250040

EMCModeling and Simulation Prediction ofDC/DC Converter

KongFanlei，WangLinghui，Cai Minghao，Zhu Zhanshan，Li Min （Global R&D Center， China FAW Corporation Limited， Changchun 130013） 【Abstract]Inorder To evaluate and predictthe Electromagnetic Compatibility（EMC）performance of DC/DCconverterin theearlystageofdesign，themainstreamelectromagneticcompatibility“threeelements”method isfirstused toanalyzethe main interferencesourceandpropagationpathofDC/DCconverter.Secondly，basedonthehigh-frequencyparametereoryof transformer，the parasitic parametertheoryof Printed-Circuit Board（PCB）andthe parameter extraction methodof common mode chokes，the common mode interferenceof transformer，PCB wiring and common mode chokesare analyzed separately. The high-frequencyequivalent modeloftransformerandPCB，experimental environment test benchesand high-voltage filtering modulesareestablishedusing MaxwellHFSS，SIwave，andQ3Dsoftware intheANSYSsimulationplatform.Finally theintegration of each moduleof DC/DC converterandthesimulation analysisof conductionand radiationemission are completed in Simplorersoftware.Theresults indicate thattheconductedandradiated interferenceexceds the standard more severely inthe Metal-Oxide-SemiconductorFieldEffectTransistor（MOSFET）switchingfrequencybandanditsharmonicsof themaininterferencesource.Themodel simulationresultsare basicallyconsistent with theoreticalanalysisandactual experimental results，and the simulation model has high accuracy.

Key words：DC converter，Electromagnetic compatibility，Three-element method， Simulation modeling，Interference analysis

【引用格式】孔繁磊，王玲辉，蔡明浩，等.DC/DC电源变换器电磁兼容性建模与仿真预测[J].汽车工程师，2025（7）：18- 23+35 ： KONG FL，WANG LH，CAI MH，et al.EMC Modeling and Simulation Predictionof DC/DC Converter[J]. Automotive Engineer，2025（7）： 18-23+35

1前言

DC/DC电源变换器的开关器件工作在高压和18汽车工程师

高频环境中，在开通和关断时会产生强烈的电磁干扰，影响汽车安全性和可靠性。（剩余8631字）